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Merge pull request #3666 from degasus/vertex_streaming

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renderer_opengl: Rewrite stream buffer.
This commit is contained in:
bunnei 2018-04-24 23:58:41 -04:00 committed by GitHub
commit b003e1398a
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5 changed files with 99 additions and 216 deletions
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19
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -30,7 +30,8 @@ MICROPROFILE_DEFINE(OpenGL_Drawing, "OpenGL", "Drawing", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Blits, "OpenGL", "Blits", MP_RGB(100, 100, 255));
MICROPROFILE_DEFINE(OpenGL_CacheManagement, "OpenGL", "Cache Mgmt", MP_RGB(100, 255, 100));
RasterizerOpenGL::RasterizerOpenGL() : shader_dirty(true) {
RasterizerOpenGL::RasterizerOpenGL()
: shader_dirty(true), vertex_buffer(GL_ARRAY_BUFFER, VERTEX_BUFFER_SIZE) {
// Clipping plane 0 is always enabled for PICA fixed clip plane z <= 0
state.clip_distance[0] = true;
@ -46,13 +47,11 @@ RasterizerOpenGL::RasterizerOpenGL() : shader_dirty(true) {
texture_cube.Create();
// Generate VBO, VAO and UBO
vertex_buffer = OGLStreamBuffer::MakeBuffer(GLAD_GL_ARB_buffer_storage, GL_ARRAY_BUFFER);
vertex_buffer->Create(VERTEX_BUFFER_SIZE, VERTEX_BUFFER_SIZE / 2);
vertex_array.Create();
uniform_buffer.Create();
state.draw.vertex_array = vertex_array.handle;
state.draw.vertex_buffer = vertex_buffer->GetHandle();
state.draw.vertex_buffer = vertex_buffer.GetHandle();
state.draw.uniform_buffer = uniform_buffer.handle;
state.Apply();
@ -499,14 +498,16 @@ void RasterizerOpenGL::DrawTriangles() {
state.Apply();
// Draw the vertex batch
size_t max_vertices = 3 * (VERTEX_BUFFER_SIZE / (3 * sizeof(HardwareVertex)));
size_t max_vertices = 3 * (vertex_buffer.GetSize() / (3 * sizeof(HardwareVertex)));
for (size_t base_vertex = 0; base_vertex < vertex_batch.size(); base_vertex += max_vertices) {
size_t vertices = std::min(max_vertices, vertex_batch.size() - base_vertex);
size_t vertex_size = vertices * sizeof(HardwareVertex);
auto map = vertex_buffer->Map(vertex_size, 1);
memcpy(map.first, vertex_batch.data() + base_vertex, vertex_size);
vertex_buffer->Unmap();
glDrawArrays(GL_TRIANGLES, map.second / sizeof(HardwareVertex), (GLsizei)vertices);
u8* vbo;
GLintptr offset;
std::tie(vbo, offset, std::ignore) = vertex_buffer.Map(vertex_size, sizeof(HardwareVertex));
memcpy(vbo, vertex_batch.data() + base_vertex, vertex_size);
vertex_buffer.Unmap(vertex_size);
glDrawArrays(GL_TRIANGLES, offset / sizeof(HardwareVertex), (GLsizei)vertices);
}
// Disable scissor test

4
src/video_core/renderer_opengl/gl_rasterizer.h
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@ -239,8 +239,8 @@ private:
std::array<SamplerInfo, 3> texture_samplers;
OGLVertexArray vertex_array;
static constexpr size_t VERTEX_BUFFER_SIZE = 128 * 1024 * 1024;
std::unique_ptr<OGLStreamBuffer> vertex_buffer;
static constexpr size_t VERTEX_BUFFER_SIZE = 32 * 1024 * 1024;
OGLStreamBuffer vertex_buffer;
OGLBuffer uniform_buffer;
OGLFramebuffer framebuffer;

33
src/video_core/renderer_opengl/gl_resource_manager.h
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@ -225,39 +225,6 @@ public:
GLuint handle = 0;
};
class OGLSync : private NonCopyable {
public:
OGLSync() = default;
OGLSync(OGLSync&& o) : handle(std::exchange(o.handle, nullptr)) {}
~OGLSync() {
Release();
}
OGLSync& operator=(OGLSync&& o) {
Release();
handle = std::exchange(o.handle, nullptr);
return *this;
}
/// Creates a new internal OpenGL resource and stores the handle
void Create() {
if (handle != 0)
return;
handle = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
}
/// Deletes the internal OpenGL resource
void Release() {
if (handle == 0)
return;
glDeleteSync(handle);
handle = 0;
}
GLsync handle = 0;
};
class OGLVertexArray : private NonCopyable {
public:
OGLVertexArray() = default;

219
src/video_core/renderer_opengl/gl_stream_buffer.cpp
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@ -9,174 +9,81 @@
#include "video_core/renderer_opengl/gl_state.h"
#include "video_core/renderer_opengl/gl_stream_buffer.h"
class OrphanBuffer : public OGLStreamBuffer {
public:
explicit OrphanBuffer(GLenum target) : OGLStreamBuffer(target) {}
~OrphanBuffer() override;
OGLStreamBuffer::OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent)
: gl_target(target), buffer_size(size) {
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
private:
void Create(size_t size, size_t sync_subdivide) override;
void Release() override;
if (GLAD_GL_ARB_buffer_storage) {
persistent = true;
coherent = prefer_coherent;
GLbitfield flags =
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | (coherent ? GL_MAP_COHERENT_BIT : 0);
glBufferStorage(gl_target, buffer_size, nullptr, flags);
mapped_ptr = static_cast<u8*>(glMapBufferRange(
gl_target, 0, buffer_size, flags | (coherent ? 0 : GL_MAP_FLUSH_EXPLICIT_BIT)));
} else {
glBufferData(gl_target, buffer_size, nullptr, GL_STREAM_DRAW);
}
}
std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
void Unmap() override;
std::vector<u8> data;
};
class StorageBuffer : public OGLStreamBuffer {
public:
explicit StorageBuffer(GLenum target) : OGLStreamBuffer(target) {}
~StorageBuffer() override;
private:
void Create(size_t size, size_t sync_subdivide) override;
void Release() override;
std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
void Unmap() override;
struct Fence {
OGLSync sync;
size_t offset;
};
std::deque<Fence> head;
std::deque<Fence> tail;
u8* mapped_ptr;
};
OGLStreamBuffer::OGLStreamBuffer(GLenum target) {
gl_target = target;
OGLStreamBuffer::~OGLStreamBuffer() {
if (persistent) {
glBindBuffer(gl_target, gl_buffer.handle);
glUnmapBuffer(gl_target);
}
gl_buffer.Release();
}
GLuint OGLStreamBuffer::GetHandle() const {
return gl_buffer.handle;
}
std::unique_ptr<OGLStreamBuffer> OGLStreamBuffer::MakeBuffer(bool storage_buffer, GLenum target) {
if (storage_buffer) {
return std::make_unique<StorageBuffer>(target);
}
return std::make_unique<OrphanBuffer>(target);
GLsizeiptr OGLStreamBuffer::GetSize() const {
return buffer_size;
}
OrphanBuffer::~OrphanBuffer() {
Release();
}
void OrphanBuffer::Create(size_t size, size_t /*sync_subdivide*/) {
buffer_pos = 0;
buffer_size = size;
data.resize(buffer_size);
if (gl_buffer.handle == 0) {
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
}
glBufferData(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr, GL_STREAM_DRAW);
}
void OrphanBuffer::Release() {
gl_buffer.Release();
}
std::pair<u8*, GLintptr> OrphanBuffer::Map(size_t size, size_t alignment) {
buffer_pos = Common::AlignUp(buffer_pos, alignment);
if (buffer_pos + size > buffer_size) {
Create(std::max(buffer_size, size), 0);
}
mapped_size = size;
return std::make_pair(&data[buffer_pos], static_cast<GLintptr>(buffer_pos));
}
void OrphanBuffer::Unmap() {
glBufferSubData(gl_target, static_cast<GLintptr>(buffer_pos),
static_cast<GLsizeiptr>(mapped_size), &data[buffer_pos]);
buffer_pos += mapped_size;
}
StorageBuffer::~StorageBuffer() {
Release();
}
void StorageBuffer::Create(size_t size, size_t sync_subdivide) {
if (gl_buffer.handle != 0)
return;
buffer_pos = 0;
buffer_size = size;
buffer_sync_subdivide = std::max<size_t>(sync_subdivide, 1);
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
glBufferStorage(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr,
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
mapped_ptr = reinterpret_cast<u8*>(
glMapBufferRange(gl_target, 0, static_cast<GLsizeiptr>(buffer_size),
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_FLUSH_EXPLICIT_BIT));
}
void StorageBuffer::Release() {
if (gl_buffer.handle == 0)
return;
glUnmapBuffer(gl_target);
gl_buffer.Release();
head.clear();
tail.clear();
}
std::pair<u8*, GLintptr> StorageBuffer::Map(size_t size, size_t alignment) {
std::tuple<u8*, GLintptr, bool> OGLStreamBuffer::Map(GLsizeiptr size, GLintptr alignment) {
ASSERT(size <= buffer_size);
OGLSync sync;
buffer_pos = Common::AlignUp(buffer_pos, alignment);
size_t effective_offset = Common::AlignDown(buffer_pos, buffer_sync_subdivide);
if (!head.empty() &&
(effective_offset > head.back().offset || buffer_pos + size > buffer_size)) {
ASSERT(head.back().sync.handle == 0);
head.back().sync.Create();
}
if (buffer_pos + size > buffer_size) {
if (!tail.empty()) {
std::swap(sync, tail.back().sync);
tail.clear();
}
std::swap(tail, head);
buffer_pos = 0;
effective_offset = 0;
}
while (!tail.empty() && buffer_pos + size > tail.front().offset) {
std::swap(sync, tail.front().sync);
tail.pop_front();
}
if (sync.handle != 0) {
glClientWaitSync(sync.handle, GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
sync.Release();
}
if (head.empty() || effective_offset > head.back().offset) {
head.emplace_back();
head.back().offset = effective_offset;
}
ASSERT(alignment <= buffer_size);
mapped_size = size;
return std::make_pair(&mapped_ptr[buffer_pos], static_cast<GLintptr>(buffer_pos));
if (alignment > 0) {
buffer_pos = Common::AlignUp<size_t>(buffer_pos, alignment);
}
bool invalidate = false;
if (buffer_pos + size > buffer_size) {
buffer_pos = 0;
invalidate = true;
if (persistent) {
glUnmapBuffer(gl_target);
}
}
if (invalidate | !persistent) {
GLbitfield flags = GL_MAP_WRITE_BIT | (persistent ? GL_MAP_PERSISTENT_BIT : 0) |
(coherent ? GL_MAP_COHERENT_BIT : GL_MAP_FLUSH_EXPLICIT_BIT) |
(invalidate ? GL_MAP_INVALIDATE_BUFFER_BIT : GL_MAP_UNSYNCHRONIZED_BIT);
mapped_ptr = static_cast<u8*>(
glMapBufferRange(gl_target, buffer_pos, buffer_size - buffer_pos, flags));
mapped_offset = buffer_pos;
}
return std::make_tuple(mapped_ptr + buffer_pos - mapped_offset, buffer_pos, invalidate);
}
void StorageBuffer::Unmap() {
glFlushMappedBufferRange(gl_target, static_cast<GLintptr>(buffer_pos),
static_cast<GLsizeiptr>(mapped_size));
buffer_pos += mapped_size;
void OGLStreamBuffer::Unmap(GLsizeiptr size) {
ASSERT(size <= mapped_size);
if (!coherent) {
glFlushMappedBufferRange(gl_target, buffer_pos - mapped_offset, size);
}
if (!persistent) {
glUnmapBuffer(gl_target);
}
buffer_pos += size;
}

40
src/video_core/renderer_opengl/gl_stream_buffer.h
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@ -2,33 +2,41 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <tuple>
#include <glad/glad.h>
#include "common/common_types.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
class OGLStreamBuffer : private NonCopyable {
public:
explicit OGLStreamBuffer(GLenum target);
virtual ~OGLStreamBuffer() = default;
public:
static std::unique_ptr<OGLStreamBuffer> MakeBuffer(bool storage_buffer, GLenum target);
virtual void Create(size_t size, size_t sync_subdivide) = 0;
virtual void Release() {}
explicit OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent = false);
~OGLStreamBuffer();
GLuint GetHandle() const;
GLsizeiptr GetSize() const;
virtual std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) = 0;
virtual void Unmap() = 0;
/*
* Allocates a linear chunk of memory in the GPU buffer with at least "size" bytes
* and the optional alignment requirement.
* If the buffer is full, the whole buffer is reallocated which invalidates old chunks.
* The return values are the pointer to the new chunk, the offset within the buffer,
* and the invalidation flag for previous chunks.
* The actual used size must be specified on unmapping the chunk.
*/
std::tuple<u8*, GLintptr, bool> Map(GLsizeiptr size, GLintptr alignment = 0);
protected:
void Unmap(GLsizeiptr size);
private:
OGLBuffer gl_buffer;
GLenum gl_target;
size_t buffer_pos = 0;
size_t buffer_size = 0;
size_t buffer_sync_subdivide = 0;
size_t mapped_size = 0;
bool coherent = false;
bool persistent = false;
GLintptr buffer_pos = 0;
GLsizeiptr buffer_size = 0;
GLintptr mapped_offset = 0;
GLsizeiptr mapped_size = 0;
u8* mapped_ptr = nullptr;
};